Contents Abstract L Introduction 1 Initial Processing of Field Samples 3 Soil Samples 3 Vegetation and Animal Samples 5 Gamma Spectrometry 5 Wet-Chemistry Analyses 6 General 6 Chemistry Procedures 8 Measurement Techniques Quality-Control Program Sample Aliquot 2. . 2. 12 1. ee ee ee 18 2... . ee Sample Homogeneity 2... 6 2 ee ee ee ee ee 2S ee ee ee ee ee ee 15 Data Comparison . . 2... ee eee eee Measurement of 20 Concentration — Alpha vs Gamma Detection we 1B .. . Wet-Chemistry Analyses of 2A VS £39,240, , Plutonium-Isotope Results Acknowledgments . . 2. 2. ke 2. ee 2... . . ew ee 19 ee ee ee -iii- 15 ee ee ee we 20 ee 2G